Warm in Sep
28°C average high
avg high · 19° at night
25°C+ on 9 in 10 days
Seychelles
Seychelles weather in September
Is it warm? Yes. September in Seychelles is warm: afternoons average 26°C and nights 25°C. Most days (80%) peak between 26°C and 27°C.
Warm · average high
26°C
25°C or more on almost every day.
- Average low25°overnight
- Sea27°average, 2023–2025
- Rainy days11132 mm in the month
- SkyMostly cloudy68% cloud · 6% clear days
How warm it really gets
Every September afternoon from 2011–2025: 450 days. Most (80%) peaked between 26° and 27°.
September, year by year
The average September high in each year. The warmest, 2015, averaged 27°C; the coolest, 2018, 26°C.
Compared with home
Average September highs. Expect rain on about 11 days (132 mm in a typical month).
- Seychelles26°
- London19°
- Manchester17°
- Dublin17°
- Cork17°
- Belfast16°
- Glasgow16°
Warmer in September, not much further
Flying times are estimates from Dublin; Seychelles is about 11h.
Warm in Sep
28°C average high
avg high · 22° at night
25°C+ on 9 in 10 days
Warm in Sep
27°C average high
avg high · 21° at night
25°C+ on 9 in 10 days
Air: ERA5 reanalysis via Open-Meteo, 2011–2025. Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Rainy day = 2 mm or more. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology